Wireless communication methods, terminal devices and network devices

Abstract

Provided are wireless communication methods, terminal devices and network devices. A method comprises: a terminal device managing one or more first transmitting and receiving points (TRPs) on the basis of first information or a first condition, the first TRPs being used by the terminal device to perform multi-TRP transmission, wherein the first information is layer-1 signaling or layer-2 signaling sent by a network device. In the embodiments of the present application, the network device can send the first information to the terminal device, so that the terminal device can manage a TRP (also referred to as a "first TRP") on the basis of the first information, wherein the first information is the layer-1 signaling or the layer-2 signaling. Compared with conventional solutions in which a network device sends configuration information of a TRP to a terminal device by means of RRC signaling, the present application is conducive to reducing the overheads of RRC signaling transmission. In addition, in the embodiments of the present application, the terminal device can manage the first TRP on the basis of the first condition. Compared with a solution in which measurement for a TRP that is executed by a terminal device is triggered on the basis of an indication of a network device, the present application is conducive to reducing the overheads of signaling transmission.

Description

Wireless communication methods, terminal equipment and network equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, and network device. Background Technology

[0002] Currently, in multi-transmitting and receiving point (TRP) scenarios, network devices send TRP configurations to terminal devices via radio resource control (RRC) signaling. For various reasons, network devices need to transmit a large amount of RRC signaling to configure TRPs for terminal devices, resulting in significant overhead. For example, as the number of TRPs supported by a terminal device increases, the network device needs to transmit a large amount of RRC signaling to configure TRPs for the terminal devices, leading to significant overhead. Another example is that, due to mobility and other reasons, terminal devices need to frequently switch TRPs; in this case, the network device needs to transmit a large amount of RRC signaling to configure TRPs for the terminal devices, resulting in significant overhead.

[0003] Summary of the Invention

[0004] This application provides a wireless communication method, terminal device, and network device. The various aspects covered by this application are described below.

[0005] In a first aspect, a wireless communication method is provided, comprising: a terminal device managing one or more first transmission points (TRPs) based on first information or first conditions, wherein the first TRPs are used by the terminal device to perform multi-TRP transmission, wherein the first information is layer 1 signaling or layer 2 signaling sent by a network device.

[0006] In a second aspect, a wireless communication method is provided, comprising: a network device sending first information to a terminal device, the first information being used to manage one or more first TRPs, the first TRPs being used by the terminal device to perform multi-TRP transmission, and the first information being layer 1 signaling or layer 2 signaling sent by the network device.

[0007] Thirdly, a wireless communication method is provided, comprising: a network device receiving second information sent by a terminal device, the second information being used to instruct the terminal device to manage a first TRP, the first TRP being used by the terminal device to perform multiple TRP transmissions.

[0008] Fourthly, a terminal device is provided, comprising: a processing unit, configured to manage one or more first transmission points (TRPs) based on first information or first conditions, wherein the first TRPs are used by the terminal device to perform multi-TRP transmission, wherein the first information is layer 1 signaling or layer 2 signaling sent by a network device.

[0009] Fifthly, a network device is provided, comprising: a sending unit, configured to send first information to a terminal device, the first information being used to manage one or more first TRPs, the first TRPs being used by the terminal device to perform multi-TRP transmission, and the first information being layer 1 signaling or layer 2 signaling sent by the network device.

[0010] In a sixth aspect, a network device is provided, comprising: a receiving unit for receiving second information sent by a terminal device, the second information being used to instruct the terminal device to manage a first TRP, the first TRP being used by the terminal device to perform multi-TRP transmission.

[0011] In a seventh aspect, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.

[0012] Eighthly, a network device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps of the method of the second or third aspect.

[0013] Ninthly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0014] In a tenth aspect, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods described above.

[0015] Eleventhly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0016] In a twelfth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0017] In this embodiment of the application, the network device can send first information to the terminal device so that the terminal device can manage the TRP (also known as "first TRP") based on the first information. The first information is Layer 1 signaling or Layer 2 signaling. Compared with the traditional solution, the network device sends the configuration information of the TRP to the terminal device through RRC signaling, which helps to reduce the overhead of transmitting RRC signaling.

[0018] In addition, in this embodiment of the application, the terminal device can manage the first TRP based on the first condition. Compared with the terminal device performing measurement on the TRP based on the network device indication triggering scheme, this helps to reduce the overhead of transmission signaling. Attached Figure Description

[0019] Figure 1 shows the wireless communication system 100 used in an embodiment of this application.

[0020] Figure 2 is a flowchart of L1 / L2 triggered mobility (LTM).

[0021] Figure 3 is a schematic diagram of a scenario in which multiple DCI-Multi-TRP (mDCI-mTRP) is applicable to the embodiments of this application.

[0022] Figure 4 is a schematic flowchart of a wireless communication method in an embodiment of this application.

[0023] Figure 5 is a schematic flowchart of a wireless communication method according to another embodiment of this application.

[0024] Figure 6 is a schematic diagram of a terminal device according to an embodiment of this application.

[0025] Figure 7 is a schematic diagram of a network device according to an embodiment of this application.

[0026] Figure 8 is a schematic diagram of a network device according to another embodiment of this application.

[0027] Figure 9 is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0028] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0029] Figure 1 illustrates a wireless communication system 100 according to an embodiment of this application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0030] Figure 1 illustrates an exemplary network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other terminal devices within its coverage area. This application embodiment does not limit this.

[0031] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0032] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0033] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0034] The network device in this application embodiment can be a device used to communicate with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, TRP, transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0035] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0036] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0037] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0038] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0039] L1 / L2 triggered mobility (LTM)

[0040] To further reduce handover latency and ensure service continuity, LTM (Last Time To Meet) has been introduced in some protocols (e.g., 3GPP R18). For ease of understanding, the LTM process will be explained below with reference to Figure 2.

[0041] As shown in Figure 2, the LTM process can include the LTM preparation phase, the LTM execution phase, and the LTM completion phase.

[0042] During the LTM preparation phase, LTM may include steps S210 to S230.

[0043] In step S210, the terminal device reports the measurement results to the network device. These measurement results can be Layer 3 measurements. The network device can then determine whether to initiate an LTM procedure and trigger candidate cell preparation based on the measurement results reported by the terminal device.

[0044] In step S220, the network device sends an RRC message containing the LTM configuration (or LTM candidate configuration) to the terminal device. For example, the network device may send an RRC reconfiguration message to the terminal device to indicate the LTM configuration.

[0045] In some embodiments, the LTM configuration sent by the network device to the terminal device may include the LTM configuration corresponding to one or more candidate cells.

[0046] In some embodiments, the terminal device may also store the LTM configuration indicated by the network device.

[0047] In step S230, the terminal device sends a reconfiguration complete message (RRCReconfigurationComplete message) to the network device.

[0048] In some embodiments, referring to steps S240a and S240b, after the terminal device completes the LTM preparation phase, it can perform uplink / downlink synchronization with the candidate cell in advance to shorten the interruption latency during the handover process. This process can be understood as the early synchronization phase.

[0049] During the LTM execution phase, LTM may include steps S250 and S260.

[0050] In step S250, the terminal device performs Layer 1 measurement on each candidate cell and reports the Layer 1 measurement results to the network device.

[0051] In some implementations, after receiving the Layer 1 measurement results reported by the terminal device, the network device can determine the target cell based on the Layer 1 measurement results.

[0052] In step S260, the network device sends a cell handover command to the terminal device to instruct the terminal device to hand over to the target cell. For example, the network device can instruct the terminal device to hand over to the target cell through a medium access control element (MAC CE).

[0053] In some implementations, after receiving a cell handover command, the terminal device can detach from the source cell and apply the target configuration (i.e., apply the configuration of the target cell).

[0054] In some embodiments, if the terminal device does not currently have a valid timing advance (TA) or transmission configuration indicator (TCI) status identifier for the target cell, the terminal device may also execute step S270 during the LTM execution phase. In step S270, the terminal device initiates a random access procedure to the target cell.

[0055] During the LTM completion phase, LTM may include step S280.

[0056] In step S280, the terminal device indicates that LTM is complete. For example, the terminal device may send an indication message that LTM has been successfully completed to the target cell.

[0057] Scheduling in multi-TRP (mTRP) scenarios

[0058] Referring to Figure 3, in the Multiple DCI-Multi-TRP (mDCI-mTRP) scenario, each TRP can schedule its PDSCH transmission through its respective DCI. That is, TRP1 can schedule the transmission of the Physical Downlink Shared Channel (PDSCH) 1 through the downlink control information (DCI) carried by the Physical Downlink Control Channel (PDCCH) 1, and TRP2 can schedule the transmission of PDSCH 2 through the DCI carried by PDCCH 2.

[0059] In some scenarios, during the evolution of subsequent protocols, each TRP may also schedule its own Physical Uplink Shared Channel (PUSCH) transmission. Referring again to Figure 3, TRP1 can schedule the transmission of PUSCH1 through the DCI carried by PDCCH1, and TRP2 can schedule the transmission of PUSCH2 through the DCI carried by PDCCH2.

[0060] It should be noted that in the mDCI-mTRP scenario, the demand for DCI is large and each TRP is scheduled independently, thus increasing the number of control resource sets (CORESETs) associated with DCI. In some implementations, CORESETs can be grouped according to their corresponding RRC parameter "CORESETPoolIndex". That is, control resource sets with CORESETPoolIndex of "0" can be grouped together, corresponding to TRP1. Control resource sets with CORESETPoolIndex of "1" can be grouped together, corresponding to TRP2. Additionally, when the network device does not configure CORESETPoolIndex for control resource sets, it can default to CORESETPoolIndex of "0".

[0061] Additionally, if the terminal device operates in a TRP (sTRP) mode, the timing advance reference point for the terminal device is calculated from the downlink reception time. In an mTRP scenario, the terminal device can still use one of the two TRPs as the downlink reception reference point to adjust the TA. For example, it can use the TRP with CORESETPoolIndex of 0 as the downlink reception reference point. Alternatively, the network device can configure a specific TRP as the downlink reception reference point. This reliance on a single downlink reference point presupposes that the terminal device has only one set of downlink reception timelines, i.e., it depends on the capabilities of the terminal device.

[0062] Of course, for more capable terminal devices, two different downlink reception reference points can also be used. Referring to Figure 3, the two TRPs can correspond to different downlink reference points, and the two TA values ​​indicated by the network device are adjusted according to their respective reference points.

[0063] In some protocols (e.g., R16), the introduced multi-TRP cooperative transmission involves different TRPs belonging to the same cell; that is, the PDCCH / PDSCH of different TRPs can only be directly or indirectly quasi-co-located with the SSB of the serving cell. Later, to extend the multi-TRP transmission scheme to multi-cell cooperative scenarios, other protocols (e.g., R17) further enhanced the multi-DCI-based multi-TRP transmission scheme, thereby supporting inter-cell multi-TRP cooperative transmission schemes. Currently, R17 introduces the following enhancements.

[0064] Firstly, in the TCI states configured for CORESET and PDSCH, the quasi-co-located (QCL) reference source signal can be a synchronization signal block (SSB) from a neighboring cell, meaning the cell ID carried in the SSB is different from the serving cell. However, the common control channel (such as common search space type 0 / 1 / 1A / 2) can still only be quasi-co-located with the serving cell's SSB, meaning it cannot receive system information from neighboring cells.

[0065] Secondly, network devices can configure up to seven sets of neighboring cell SSB information via RRC signaling. Each set of SSB information includes the SSB period, transmission power, and actual transmitted SSB location. Network devices can also activate two sets of TCI states via MAC signaling. Each TCI state is associated with a CORESET group index. One set of TCI states is associated with the serving cell SSB, and the other set is associated with one set of neighboring cell SSB information configured by RRC (i.e., the QCL reference source signal in this set of TCI states is the neighboring cell's SSB pre-configured by RRC). The number of neighboring cell SSB information that a terminal can support needs to be reported to the network device through the terminal device's capabilities.

[0066] Thirdly, on the symbol where the neighboring cell SSB associated with the currently active TCI state is located, the terminal device cannot transmit any uplink signal, thereby avoiding the conflict between the uplink signal and the neighboring cell SSB that needs to be measured.

[0067] With this signaling design, in addition to the serving cell SSB, network devices can also dynamically activate a set of neighboring cell SSB information as the QCL source signal for PDCCH / PDSCH, thereby supporting multi-TRP cooperative transmission between two different cells.

[0068] Currently, in multi-TRP scenarios, network devices send TRP configurations to terminal devices via RRC signaling. For various reasons, network devices need to transmit a large amount of RRC signaling to configure TRPs for terminal devices, resulting in significant overhead. For example, as the number of TRPs supported by a terminal device increases, the network device needs to transmit a large amount of RRC signaling to configure TRPs for the terminal devices, leading to significant overhead. Another example is that, due to mobility and other reasons, terminal devices need to frequently switch TRPs; in this case, the network device needs to transmit a large amount of RRC signaling to configure TRPs for the terminal devices, resulting in significant overhead.

[0069] Therefore, in response to the above-mentioned solution, this application provides a wireless communication method. In this method, a network device can send first information to a terminal device so that the terminal device can manage the TRP (also known as "first TRP") based on the first information. The first information is Layer 1 signaling or Layer 2 signaling. Compared with the traditional solution, where the network device sends the TRP configuration information to the terminal device through RRC signaling, this method helps to reduce the overhead of transmitting RRC signaling.

[0070] On the other hand, the first information is either Layer 1 signaling or Layer 2 signaling. Compared with the traditional scheme of transmitting TRP configuration information through RRC signaling, it helps to reduce the latency of transmitting the first information, thereby reducing the latency of managing TRP based on the first information.

[0071] The wireless communication method in an embodiment of this application is described below with reference to Figure 4. The method shown in Figure 4 includes step S410, in which the terminal device manages one or more first TRPs based on first information.

[0072] In some implementations, the first TRP is associated with the terminal device for multi-TRP transmission; that is, the first TRP is used by the terminal device for multi-TRP transmission. For example, the first TRP can be a serving TRP, or it can be the currently active TRP. Another example is that the first TRP is an inactive TRP configured for the terminal device. Yet another example is that the first TRP can be a candidate TRP for the terminal device. Yet another example is that the first TRP is the anchor TRP in a multi-TRP scenario. And yet another example is that the first TRP is a TRP that cooperates with the anchor TRP for transmission in a multi-TRP scenario.

[0073] In some implementations, the first information is Layer 1 signaling or Layer 2 signaling sent by the network device. Taking Layer 1 signaling as an example, the first information can be, for example, DCI. Taking Layer 2 signaling as an example, the first information can be, for example, MAC CE.

[0074] The first information is not limited in the embodiments of this application. In some implementations, the first information can be multiplexed with Layer 1 signaling or Layer 2 signaling in a known communication system. Taking the multiplexing of the first information with Layer 2 signaling in a known communication system as an example, the first information can be carried in one or more of the following Layer 2 signaling: MAC CE for LTM cell handover; MAC CE for secondary cell (SCell) activation; MAC CE for SCell deactivation. Of course, in the embodiments of this application, the first information can be carried in newly introduced Layer 1 signaling, or the first information can be carried in newly introduced Layer 2 signaling.

[0075] In some implementations, managing the first TRP includes the following: activating the first TRP; deactivating the first TRP; adding the first TRP; releasing the first TRP; measuring the first TRP; and sending the measurement result of the first TRP.

[0076] Taking the management of the first TRP, including its activation, as an example, the terminal device can perform multi-TRP cooperative transmission based on the activated first TRP. That is to say, in response to the terminal device receiving the first information sent by the network device, the terminal device activates the first TRP.

[0077] In the embodiments of this application, the activation of the first TRP is not specifically limited. In some implementations, activating the first TRP may include one or more of the following: transmitting a sounding reference signal (SRS); reporting channel state information (CSI); transmitting on an uplink-shared channel (UL-SCH); transmitting on a random access channel (RACH); listening to the PDCCH; or transmitting on a physical uplink control channel (PUCCH).

[0078] Taking the management of the first TRP, including deactivating the first TRP, as an example, the terminal device no longer performs multi-TRP cooperative transmission based on the activated first TRP. That is to say, in response to the terminal device receiving the first information sent by the network device, the terminal device deactivates the first TRP.

[0079] In the embodiments of this application, the deactivation of the first TRP is not specifically limited. In some implementations, deactivating the first TRP may include one or more of the following: not transmitting SRS; not reporting CSI; not transmitting on UL-SCH; not transmitting on RACH; not listening to PDCCH; not transmitting on PUCCH; and clearing the Hybrid Automatic Repeat reQuest (HARQ) cache associated with the first TRP.

[0080] Taking the management of the first TRP, including adding the first TRP, as an example, the terminal device can add the first TRP as a candidate TRP so that subsequent handover can be performed based on the first TRP. That is to say, in response to the terminal device receiving the first information sent by the network device, the terminal device adds the first TRP.

[0081] Taking the management of the first TRP, including releasing the first TRP, as an example, the terminal device can release the first TRP, at which point the first TRP no longer needs to be considered as a candidate TRP for the terminal device. That is to say, in response to the terminal device receiving the first information sent by the network device, the terminal device releases the first TRP.

[0082] Taking the management of the first TRP, including the measurement of the first TRP, as an example, the terminal device can measure the first TRP to determine its communication conditions. That is, in response to the terminal device receiving the first information sent by the network device, the terminal device initiates the measurement of the first TRP.

[0083] In some scenarios, measuring the first TRP can be replaced by tracking the first TRP, where measurement and tracking have similar meanings.

[0084] Taking the management of the first TRP, which includes sending the measurement results of the first TRP, as an example, that is, the management of the first TRP includes the terminal device sending the measurement results obtained by measuring the first TRP to the network device.

[0085] For example, in response to receiving the first information sent by the network device, the terminal device sends the measurement result of the first TRP to the network device.

[0086] In some implementations, the measurement results can be used to determine the channel quality of the first TRP. Accordingly, the channel quality of the first TRP may include one or more of the following: measurement results of one or more SSBs associated with the first TRP, measurement results of one or more CSI-RSs associated with the first TRP, and measurement results of one or more TRSs associated with the first TRP.

[0087] Currently, in multi-TRP scenarios, terminal devices perform TRP measurements either based on network device instructions or periodically triggered by the terminal device. When TRP measurements are triggered by network device instructions, if the terminal device is mobile, it may need to frequently switch TRPs. Consequently, the network device needs to frequently instruct the terminal device to perform TRP measurements, resulting in significant signaling overhead. When TRP measurements are periodically triggered, the terminal device needs to perform TRP measurements periodically regardless of the communication status of the serving TRP, leading to low efficiency in TRP measurement.

[0088] Therefore, in view of the above problems, another embodiment of this application also provides a wireless communication method, in which the terminal device can manage the first TRP based on a first condition. Compared with the terminal device performing measurement on the TRP based on the network device indication triggering scheme, this helps to reduce the overhead of transmission signaling.

[0089] On the other hand, the terminal device can manage the first transmission point TRP based on the first condition, which helps to improve the efficiency of the terminal device in measuring the first TRP compared to the terminal device performing TRP measurements periodically.

[0090] The wireless communication method in this embodiment of the application is described below with reference to Figure 5. The method shown in Figure 5 includes step S510. In step S510, the terminal device manages the first transmission point TRP based on a first condition. For example, if the first condition is met, the terminal device manages the first transmission point TRP. The description of the first TRP and the management of the first TRP can be found above, and will not be repeated here for the sake of brevity.

[0091] Taking the management of the first TRP, including the measurement of the first TRP, as an example, the above step S510 includes the terminal device measuring the first TRP based on a first condition. For example, if the first condition is met, the terminal device initiates the measurement of the first TRP.

[0092] Taking the management of the first TRP, including sending the measurement result of the first TRP, as an example, step S510 above includes the terminal device sending the measurement result of the first TRP to the network device based on a first condition. For example, if the first condition is met, the terminal device sends the measurement result of the first TRP to the network device.

[0093] In some implementations, the first condition is associated with one or more of the following: the measurement result of the serving TRP; the measurement result of the first TRP; the location information of the terminal device; the first region associated with the serving TRP; the second region associated with the first TRP; the first time period associated with the first TRP; the TRP associated with the data to be transmitted; and the amount of data to be transmitted.

[0094] Taking the association of the first condition with the measurement results of the serving TRP as an example, the measurement results of the serving TRP can be used to determine the channel quality of the serving TRP.

[0095] In some implementations, the first condition may include the channel quality of the serving TRP being lower than or equal to a first threshold, where the first threshold can be determined by one or more of the following methods: predefined, preconfigured, and network device configuration. Generally, if the channel quality of the serving TRP is lower than or equal to the first threshold, it indicates that the channel quality of the serving TRP is poor.

[0096] In some implementations, if the first condition described above is met, managing the first TRP includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP. Of course, in the embodiments of this application, if the first TRP and the serving TRP provide cooperative transmission for the terminal device, managing the first TRP may include deactivating or releasing the first TRP.

[0097] In some implementations, the first condition may include the serving TRP's channel quality being higher than a fourth threshold, which can be determined through one or more of the following methods: predefined, preconfigured, and network device configuration. Generally, if the serving TRP's channel quality is higher than the fourth threshold, it indicates that the serving TRP has good channel quality.

[0098] In some implementations, if the first condition described above is met, managing the first TRP includes one of the following: deactivating the first TRP; releasing the first TRP; or measuring the first TRP. Of course, in the embodiments of this application, if the first TRP and the serving TRP provide cooperative transmission for the terminal device, managing the first TRP may include activating the first TRP or adding the first TRP.

[0099] In some implementations, the aforementioned service TRP can be understood as the active TRP. In other implementations, the service TRP includes the primary TRP and / or secondary TRPs.

[0100] Taking the association of the first condition with the measurement result of the first TRP as an example, the measurement result of the first TRP can be used to determine the channel quality of the first TRP.

[0101] In some implementations, the first condition may include the channel quality of the first TRP being higher than or equal to a second threshold, wherein the second threshold can be determined by one or more of the following methods: predefined, preconfigured, and network device configuration. Generally, if the channel quality of the first TRP is higher than or equal to the second threshold, it indicates that the channel quality of the first TRP is good.

[0102] In some implementations, if the first condition mentioned above is met, managing the first TRP includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP.

[0103] In other implementations, the first condition may include the channel quality of the first TRP being lower than a second threshold, wherein the second threshold can be determined by one or more of the following methods: predefined, preconfigured, and network device configuration. Typically, if the channel quality of the first TRP is lower than the second threshold, it indicates that the channel quality of the first TRP is poor.

[0104] In some implementations, if the first condition mentioned above is met, managing the first TRP includes one of the following: deactivating the first TRP; releasing the first TRP; or measuring the first TRP.

[0105] Taking the association of the first condition with the measurement results of the first TRP and the measurement results of the serving TRP as an example, the measurement results of the first TRP can be used to determine the channel quality of the first TRP, and / or the measurement results of the serving TRP can be used to determine the channel quality of the serving TRP.

[0106] In some implementations, the channel quality of the first TRP is higher than that of the serving TRP, and the difference between the channel quality of the first TRP and the serving TRP is greater than a third threshold. This third threshold can be determined through one or more of the following methods: predefined, pre-configured, and configured by the network device. Generally, if the channel quality of the first TRP is higher than that of the serving TRP, and the difference between their channel quality is greater than the third threshold, it indicates that the channel quality of the first TRP is significantly better than that of the serving TRP.

[0107] In some implementations, if the first condition mentioned above is met, managing the first TRP includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP.

[0108] In other implementations, the channel quality of the first TRP is lower than that of the serving TRP, and the difference between the channel quality of the first TRP and the serving TRP is greater than a third threshold. This third threshold can be determined through one or more of the following methods: predefined, preconfigured, and configured by the network device. Generally, if the channel quality of the first TRP is lower than that of the serving TRP, and the difference between their channel quality is greater than the third threshold, it indicates that the channel quality of the first TRP is significantly worse than that of the serving TRP.

[0109] In some implementations, if the first condition mentioned above is met, managing the first TRP includes one of the following: deactivating the first TRP; releasing the first TRP; or measuring the first TRP.

[0110] Taking the association of the first region with the serving TRP as an example, in some implementations, the first region can be understood as the coverage area of ​​the serving TRP. In other implementations, the first region can be determined by one of the following: cell identifier, cell group identifier, CU identifier, or DU identifier. In still other implementations, the first region can be determined based on physical region information, where physical regions include circles, squares, polygons, etc. For example, the first region can be determined based on information such as the center point and / or radius of the physical region.

[0111] In some implementations, the first condition may include the terminal device leaving the first area associated with the serving TRP. Typically, if the terminal device leaves the first area associated with the serving TRP, the serving TRP will no longer provide services to the terminal device.

[0112] In some implementations, if the first condition described above is met, managing the first TRP includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP. Of course, in the embodiments of this application, if the first TRP and the serving TRP provide cooperative transmission for the terminal device, managing the first TRP may include deactivating or releasing the first TRP.

[0113] In some implementations, the first condition may include the terminal device entering the first area associated with the serving TRP. Typically, if the terminal device enters the first area associated with the serving TRP, the serving TRP can continue to provide services to the terminal device.

[0114] In some implementations, if the first condition described above is met, managing the first TRP includes one of the following: deactivating the first TRP; releasing the first TRP; or measuring the first TRP. Of course, in the embodiments of this application, if the first TRP and the serving TRP provide cooperative transmission for the terminal device, managing the first TRP may include activating the first TRP or adding the first TRP.

[0115] Taking the association of a second region with the first condition and the first TRP as an example, in some implementations, the second region can be understood as the coverage area of ​​the first TRP. In other implementations, the second region can be determined by one of the following: cell identifier, cell group identifier, CU identifier, or DU identifier. In still other implementations, the second region can be determined based on physical region information, where physical regions include circles, squares, polygons, etc. For example, the second region can be determined based on information such as the center point and / or radius of the physical region.

[0116] In some implementations, the first condition may include the terminal device entering the second area associated with the first TRP. Typically, if the terminal device enters the second area associated with the first TRP, the first TRP can provide services to the terminal device.

[0117] In some implementations, if the first condition mentioned above is met, managing the first TRP includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP.

[0118] In some implementations, the first condition may include the terminal device leaving the second area associated with the first TRP. Typically, if the terminal device leaves the second area associated with the first TRP, the first TRP will not provide services to the terminal device.

[0119] In some implementations, if the first condition mentioned above is met, managing the first TRP includes one of the following: deactivating the first TRP; releasing the first TRP; or measuring the first TRP.

[0120] Taking the association of the first condition with the first time period as an example, in some implementations, the first time period associated with the first TRP can be understood as communication based on the first TRP within the first time period, or communication not based on the first TRP within the first time period.

[0121] In this embodiment, the method for determining the association between the first TRP and the first time period is not limited. In some implementations, this association can be determined by one or more of the following: predefined information, preconfiguration information, and configuration information sent by the network device.

[0122] In some implementations, the first condition may include being within the first time period associated with the first TRP, or entering the first time period associated with the first TRP.

[0123] For example, if the first time period is used to indicate the time period for communication based on the first TRP, then managing the first TRP includes the following: activating the first TRP; adding the first TRP; measuring the first TRP.

[0124] For example, if the first time period is used to indicate a time period during which communication is not based on the first TRP, then managing the first TRP includes the following: deactivating the first TRP; releasing the first TRP; measuring the first TRP.

[0125] Taking the association of the first condition with the TRP associated with the data to be transmitted as an example, in some implementations, the TRP associated with the data to be transmitted is the first TRP or the service TRP.

[0126] In this embodiment, the association between the TRP and the data to be transmitted is not limited. The association between the TRP and the data to be transmitted can be determined by the service type corresponding to the TRP and the data to be transmitted. In some implementations, this association can be determined by one or more of the following: predefined information, preconfiguration information, and configuration information sent by the network device.

[0127] In some implementations, the first condition may include the TRP associated with the data to be transmitted being designated as the first TRP. Accordingly, if the first condition is met, managing the first TRP may include: activating the first TRP; adding the first TRP; or measuring the first TRP.

[0128] In some implementations, the first condition may include the TRP associated with the data to be transmitted being a serving TRP. Accordingly, if the first condition is met, managing the first TRP includes one of the following: deactivating the first TRP; releasing the first TRP; or measuring the first TRP. Of course, in this embodiment, if the first TRP and the serving TRP provide cooperative transmission for the terminal device, then managing the first TRP, when the first condition is met, includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP.

[0129] Taking the association of the first condition with the amount of data to be transmitted as an example, in some implementations, the first condition may include the amount of data to be transmitted being greater than or equal to a threshold value.

[0130] In some implementations, managing the first TRP if the first condition is met includes one of the following: activating the first TRP; adding the first TRP; or measuring the first TRP. For example, if the amount of data to be transmitted is greater than or equal to a threshold value, the terminal device can be triggered to measure the channel quality of the first TRP and send the first TRP to the network device to assist the network device in instructing the addition or activation of the first TRP.

[0131] In this embodiment, the association between the first TRP and the threshold is not limited. In some implementations, this association can be determined by one or more of the following: predefined information, preconfiguration information, and configuration information sent by the network device.

[0132] In the embodiments of this application, the thresholds used to determine channel quality (e.g., a first threshold, a second threshold, a third threshold, or a fourth threshold) may include one or more of the following: a reference signal receive power (RSRP) threshold, a reference signal receive quality (RSRQ) threshold, and a signal to interference plus noise ratio (SINR) threshold. Accordingly, the channel quality can be measured by one or more of the following parameters: RSRP, RSRQ, and SINR.

[0133] Additionally, in the embodiments of this application, the channel quality of the aforementioned TRP (e.g., the channel quality of the first TRP and / or the channel quality of the serving TRP) may include one or more of the following: measurement results of one or more SSBs associated with the TRP, measurement results of one or more CSI-RSs associated with the TRP, and measurement results of one or more TRSs associated with the TRP.

[0134] In some implementations, if the terminal device manages the first TRP based on the first condition, the terminal device can inform the network device of the first TRP it manages, so that the network device and the terminal device can reach a consensus on the management of the first TRP, thereby avoiding communication failure due to inconsistent understandings of the management of the first TRP between the network device and the terminal device. That is to say, the above method also includes: the terminal device sending second information to the network device, the second information being used to instruct the management of the first TRP.

[0135] In some implementations, the second information can be carried in auxiliary information (also known as "UE auxiliary information").

[0136] In some implementations, the first TRP belongs to a set of TRPs. For example, the first TRP can be one or more TRPs in the set of TRPs. Accordingly, managing the first TRP includes managing one or more TRPs in the set of TRPs.

[0137] Taking the management of a first TRP, including the measurement of the first TRP, as an example, the measurement of the first TRP includes the measurement of one or more TRPs in the TRP set, wherein the measurement of one or more TRPs may, for example, include the measurement of the beam associated with one or more TRPs.

[0138] In some scenarios, a terminal device may correspond to multiple active TRPs (including the first TRP). In this case, the terminal device can independently maintain the beam information associated with each active TRP.

[0139] In some implementations, the TRP set can be configured by the network device for the terminal device. For example, the network device can configure the TRP set for the terminal device via RRC signaling. In the embodiments of this application, the network device can configure the TRP set for the terminal device to improve the efficiency of TRP configuration.

[0140] In this embodiment, the time for the terminal device to measure the first TRP is not limited. In some implementations, the time for the terminal device to measure the first TRP may be determined based on the time when the terminal device receives the configuration TRP set from the network device. For example, the terminal device may perform the measurement of the first TRP after receiving the configuration information for configuring the TRP set sent by the network device. In other implementations, the time for the terminal device to measure the first TRP may be determined based on the time when the terminal device determines the first TRP. For example, the terminal device may perform the measurement of the first TRP after determining the first TRP based on a first condition.

[0141] In some implementations, the method further includes: the terminal device obtaining parameters of the first TRP. For example, the network device can send the parameters of the first TRP to the terminal device.

[0142] In some implementations, the parameters of the first TRP include one or more of the following: the identifier of the first TRP; the TRP type of the first TRP; the cell information that the first TRP cooperates with; the activation indication information of the first TRP; the deactivation indication information of the first TRP; the TCI status associated with the first TRP; the uplink synchronization information associated with the first TRP; the reference signal information associated with the first TRP; the indication information for instructing the first TRP to acquire TA; at least one configuration activation indication information associated with the first TRP; and the resource configuration indication information required for uplink synchronization with the first TRP.

[0143] Taking the first TRP's identifier as an example, the identifier information of the first TRP is used to identify the first TRP. In this embodiment, the identifier information of the first TRP is not limited. For example, the identifier information of the first TRP can be determined based on one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the cell identifier associated with the first TRP, the identifier of the configuration group associated with the first TRP, and the identifier of the RS set associated with the first TRP, wherein the RS may include one or more of SRS, TRS, SSB, and CSI-RS, for example.

[0144] Taking the parameters of the first TRP, including the TRP type of the first TRP, as an example, in some implementations, the TRP type of the first TRP includes one or more of the following: control plane (CP) TRP; user plane (UP) TRP; TRP for listening to the common channel (e.g., PCell mTRP); TRP not for listening to the common channel (e.g., SCell mTRP); TRP for uplink transmission only; TRP for downlink transmission only; TRP for both uplink and downlink transmission.

[0145] Taking the parameters of the first TRP as including the cell information of the first TRP cooperation as an example, the cell information of the first TRP cooperation may include the cell identifier.

[0146] Taking the parameters of the first TRP, including the activation indication information of the first TRP, as an example, the activation indication information is used to indicate the activation of the first TRP.

[0147] In some implementations, the activation indication information can be used in conjunction with the identifier of the first TRP to reduce the number of bits occupied by the information. That is, the identifier of the first TRP and the activation indication information are used together to indicate the activation of the first TRP. Of course, in the embodiments of this application, the activation indication information and the identifier of the first TRP can be used independently.

[0148] Taking the parameters of the first TRP, including the deactivation indication information of the first TRP, as an example, the deactivation indication information is used to indicate the deactivation of the first TRP.

[0149] In some implementations, the deactivation indication information can be used in conjunction with the identifier of the first TRP to reduce the number of bits occupied by the information. That is, the identifier of the first TRP and the deactivation indication information are used together to indicate the deactivation of the first TRP. Of course, in the embodiments of this application, the deactivation indication information can be used independently of the identifier of the first TRP.

[0150] Taking the parameters of the first TRP as including the TCI state associated with the first TRP as an example, in some implementations, the TCI state may include the uplink TCI state and / or the downlink TCI state.

[0151] Taking the parameters of the first TRP as including the uplink synchronization information associated with the first TRP as an example, in some implementations, the uplink synchronization information associated with the first TRP may include the timing advance (TA) value of the first TRP.

[0152] In some scenarios, a terminal device may correspond to multiple active TRPs (including the first TRP). In this case, the terminal device can independently maintain the TA information of each active TRP.

[0153] Taking the parameters of the first TRP including the reference signal information associated with the first TRP as an example, in some implementations, the reference signal information associated with the first TRP may include one or more of the following: the SSB associated with the first TRP, the CSI-RS associated with the first TRP, the tracking reference signal (TRS) associated with the first TRP, and the SRS information associated with the first TRP.

[0154] Taking the parameters of the first TRP including the resource configuration indication information required for uplink synchronization with the first TRP as an example, in some implementations, the resource configuration indication information may include one or more of the following: preamble information, SSB information, and physical random access channel (PRACH) mask index.

[0155] Taking the example that the parameters of the first TRP include at least one configuration activation indication information associated with the first TRP, the configuration activation indication information is used to indicate the activation of one or more configuration information associated with the first TRP.

[0156] In some implementations, at least one configuration associated with the first TRP includes one or more of the following: resource configuration associated with the first TRP; transport configuration associated with the first TRP; HARQ configuration associated with the first TRP; and link monitoring configuration associated with the first TRP.

[0157] In some implementations, the resource configuration associated with the first TRP may include the configured grant (CG) resource configuration associated with the first TRP and / or the RACH resource configuration associated with the first TRP.

[0158] In some implementations, the transport configuration associated with the first TRP may include one or more of the following: the transport configuration of PDCCH, the transport configuration of PUCCH, the transport configuration of PDSCH, and the transport configuration of PUSCH.

[0159] In some implementations, the link monitoring configuration associated with the first TRP may include one or more of the following: a measurement configuration for radio link monitoring (RLM), a measurement configuration for beam failure detection (BFD), and a measurement configuration for beam failure recovery (BFR). Of course, in the embodiments of this application, the link monitoring configuration may include an SS / PBCH block measurement timing configuration (SMTC).

[0160] In some implementations, at least one configuration associated with the first TRP is carried in the first information. That is, information indicating management actions for at least one configuration associated with the first TRP can be carried in the same signaling as information from the terminal device to the network device indicating management of the first TRP (i.e., the second information). Of course, in the embodiments of this application, they can also be independent indication information.

[0161] In other implementations, at least one configuration information associated with the first TRP can be carried within the first information. That is, information indicating management actions for at least one configuration associated with the first TRP can be carried in the same signaling as information from the network device to the terminal device instructing the management of the first TRP (i.e., the first information). Of course, in the embodiments of this application, they can also be independent indication information.

[0162] In some implementations, at least one configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; and time domain information.

[0163] For example, at least one configuration associated with the first TRP can be associated with different airspace information, which may include one or more of the following: the configuration information associated with the first TRP is different for different SSB configurations; the configuration information associated with the first TRP is different for different CSI-RS configurations; the configuration information associated with the first TRP is different for different TRS configurations.

[0164] For example, at least one configuration associated with the first TRP can be associated with different frequency domain information, which may include one or more of the following: the configuration information associated with the first TRP is different for different BWP configurations; the configuration information associated with the first TRP is different for different carrier configurations; the configuration information associated with the first TRP is different for different frequency band configurations.

[0165] For example, at least one configuration associated with the first TRP may be associated with different time-domain information, which may include different configuration information associated with the first TRP for different periods.

[0166] In some implementations, the method further includes the terminal device performing a second operation on the first TRP. For example, after obtaining the parameters of the first TRP, the terminal device can perform the second operation based on the parameters of the first TRP.

[0167] In some implementations, the second operation includes one or more of the following: using one or more configuration information associated with the first TRP; communicating based on the timing advance TA of the first TRP; communicating based on the TCI state of the first TRP; starting the TA timer of the TA associated with the first TRP; sending the parameters of the first TRP to the protocol layer of the terminal device; sending the measurement results for the first TRP to the network device; and switching the serving TRP to the first TRP.

[0168] For example, if the parameters of the first TRP include one or more configuration information associated with the first TRP, the second operation may include the terminal device using one or more configuration information associated with the first TRP, wherein the one or more configuration information associated with the first TRP can be referred to the above description.

[0169] For example, if the parameters of the first TRP include the TA of the first TRP, then the second operation may include the terminal device communicating with the first TRP based on the TA of the first TRP.

[0170] For example, if the parameters of the first TRP include the TCI state of the first TRP, then the second operation may include the terminal device communicating with the first TRP based on the TCI state of the first TRP.

[0171] For example, if the parameters of the first TRP include the TA associated with the first TRP, then the second operation may include the terminal device starting the TA timer of the TA associated with the first TRP.

[0172] In some scenarios, a terminal device may correspond to multiple active TRPs (including the first TRP). In this case, the terminal device can independently maintain the TA timer for each active TRP.

[0173] For example, the second operation may include sending the parameters of the first TRP to the protocol layer of the terminal device. For instance, if the parameters of the first TRP are transmitted via Layer 2 signaling, the MAC layer of the terminal device may send some or all of the TRP parameters to the physical layer of the terminal device. Alternatively, if the parameters of the first TRP are transmitted via Layer 1 signaling, the physical layer of the terminal device may send some or all of the TRP parameters to the MAC layer of the terminal device.

[0174] In some implementations, the above method further includes synchronizing the terminal device with the first TRP before the terminal device manages the first TRP, so as to reduce the time required for the terminal device to prepare to communicate with the first TRP.

[0175] For example, before the terminal device manages the first TRP, the terminal device can send a RACH to the first TRP in order to perform uplink synchronization with the first TRP.

[0176] For example, before the terminal device manages the first TRP, the terminal device can send a reference signal to the first TRP in order to perform uplink synchronization with the first TRP.

[0177] For example, before the terminal device manages the first TRP, the terminal device measures the downlink beam in order to perform downlink synchronization with the first TRP.

[0178] In some implementations, if the first information is used to indicate the activation of the first TRP, the method further includes: if the number of TRPs supported by the terminal device reaches the upper limit, in response to receiving the first information, the terminal device performs a first operation, the first operation including one of the following: ignoring the activation of the first TRP; deactivating the currently working TRP and activating the first TRP.

[0179] In some implementations, the TRP deactivated by the terminal device can be the TRP with poor channel quality among multiple currently active TRPs.

[0180] For example, the terminal device supports N TRPs, and the number of currently active second transmission points is N, where N is a positive integer greater than or equal to 1. In this case, if the terminal device receives first information indicating the activation of a first TRP, the terminal device can deselect the second transmission point with the worst channel quality among the N activated second transmission points and activate the first TRP.

[0181] In this embodiment, the number of TRPs supported by the terminal device can be configured by the network device, or the terminal device can report the number of TRPs it supports to the network device. For example, the terminal device can report the number of TRPs it supports to the network device through capability information.

[0182] Furthermore, the measurements involved in the embodiments of this application may include, for example, layer 1 measurements, which helps reduce the time required for measurement. Of course, the measurements in the embodiments of this application may also be layer 3 measurements.

[0183] The method embodiments of this application have been described in detail above with reference to Figures 1 to 5. The apparatus embodiments of this application will be described in detail below with reference to Figures 6 to 9. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0184] Figure 6 is a schematic diagram of a terminal device according to an embodiment of this application. The terminal device 600 shown in Figure 6 includes a processing unit 610.

[0185] The processing unit 610 is configured to manage one or more first transmission points (TRPs) based on first information or first conditions. The first TRPs are used by the terminal device for multi-TRP transmission. The first information is layer 1 signaling or layer 2 signaling sent by the network device.

[0186] In some implementations, managing the first TRP includes one of the following: activating the first TRP; deactivating the first TRP; adding the first TRP; releasing the first TRP; measuring the first TRP; and sending the measurement result of the first TRP.

[0187] In some implementations, the first TRP belongs to a set of TRPs, and managing one or more first TRPs includes managing one or more TRPs in the set of TRPs.

[0188] In some implementations, the first condition is associated with one or more of the following: the measurement result of the serving TRP; the measurement result of the first TRP; the location information of the terminal device; the first region associated with the serving TRP; the second region associated with the first TRP; the first time period associated with the first TRP; the TRP associated with the data to be transmitted; and the amount of data to be transmitted.

[0189] In some implementations, the first condition includes one or more of the following: the channel quality of the serving TRP is lower than or equal to a first threshold, the serving TRP including a primary TRP and / or a secondary TRP; the channel quality of the first TRP is higher than a second threshold; the channel quality of the first TRP is higher than the channel quality of the serving TRP, and the difference between the channel quality of the first TRP and the channel quality of the serving TRP is greater than a third threshold; the terminal device leaves a first area associated with the serving TRP; the terminal device enters a second area associated with the first TRP; the data to be transmitted by the terminal device is associated with the first TRP; the amount of data to be transmitted by the terminal device is greater than or equal to a threshold value; the channel quality of the serving TRP is greater than or equal to a fourth threshold.

[0190] In some implementations, the terminal device further includes a sending unit for sending second information to the network device, the second information being used to instruct the terminal device to manage the first TRP.

[0191] In some implementations, the Layer 2 signaling includes one or more of the following: MAC CE for LTM cell handover; MAC CE for secondary cell SCell activation; and MAC CE for secondary cell SCell deactivation.

[0192] In some implementations, the terminal device further includes: the terminal device acquiring parameters of the first TRP, wherein the parameters of the first TRP include one or more of the following: the identifier of the first TRP; the TRP type of the first TRP; cell information cooperating with the first TRP; activation indication information of the first TRP; deactivation indication information of the first TRP; TCI status associated with the first TRP; uplink synchronization information associated with the first TRP; reference signal information associated with the first TRP; indication information for instructing the first TRP to acquire TA; at least one configuration activation indication information associated with the first TRP; and resource configuration indication information required for uplink synchronization with the first TRP.

[0193] In some implementations, at least one configuration associated with the first TRP includes one or more of the following: resource configuration associated with the first TRP; transmission configuration associated with the first TRP; HARQ configuration associated with the first TRP; and link monitoring configuration associated with the first TRP.

[0194] In some implementations, at least one configuration associated with the first TRP is carried in the first information.

[0195] In some implementations, at least one configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; and time domain information.

[0196] In some implementations, the TRP type of the first TRP includes one or more of the following: control plane CP TRP; user plane UP TRP; TRP for listening to common channels; TRP not for listening to common channels; TRP for uplink transmission only; TRP for downlink transmission only; TRP for both uplink and downlink transmission.

[0197] In some implementations, the processing unit is configured to synchronize with the first TRP before the terminal device manages the first TRP.

[0198] In some implementations, the first information is used to indicate the activation of the first TRP, and the processing unit is used to: if the number of TRPs supported by the terminal device reaches the upper limit, in response to receiving the first information, perform a first operation, the first operation including one of the following: ignoring the activation of the first TRP; deactivating the currently working TRP and activating the first TRP.

[0199] In some implementations, the first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

[0200] Figure 7 is a schematic diagram of a network device according to an embodiment of this application. The network device 700 shown in Figure 7 includes: a transmitting unit 710.

[0201] The sending unit 710 is used to send first information to the terminal device. The first information is used to manage one or more first TRPs. The first TRPs are used by the terminal device to perform multi-TRP transmission. The first information is Layer 1 signaling or Layer 2 signaling sent by the network device.

[0202] In some implementations, managing the first TRP includes one of the following: activating the first TRP; deactivating the first TRP; adding the first TRP; releasing the first TRP; measuring the first TRP; and receiving the measurement result of the first TRP.

[0203] In some implementations, the first TRP belongs to a set of TRPs, and managing one or more first TRPs includes managing one or more TRPs in the set of TRPs.

[0204] In some implementations, the Layer 2 signaling includes one or more of the following: MAC CE for LTM cell handover; MAC CE for secondary cell SCell activation; and MAC CE for secondary cell SCell deactivation.

[0205] In some implementations, the parameters of the first TRP include one or more of the following: the identifier of the first TRP; the TRP type of the first TRP; the cell information that the first TRP cooperates with; the activation indication information of the first TRP; the deactivation indication information of the first TRP; the TCI status associated with the first TRP; the uplink synchronization information associated with the first TRP; the reference signal information associated with the first TRP; the indication information for instructing the first TRP to acquire TA; at least one configuration activation indication information associated with the first TRP; and the resource configuration indication information required for uplink synchronization with the first TRP.

[0206] In some implementations, at least one configuration associated with the first TRP includes one or more of the following: resource configuration associated with the first TRP; transmission configuration associated with the first TRP; HARQ configuration associated with the first TRP; and link monitoring configuration associated with the first TRP.

[0207] In some implementations, at least one configuration associated with the first TRP is carried in the first information.

[0208] In some implementations, at least one configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; and time domain information.

[0209] In some implementations, the TRP type of the first TRP includes one or more of the following: control plane CP TRP; user plane UP TRP; TRP for listening to common channels; TRP not for listening to common channels; TRP for uplink transmission only; TRP for downlink transmission only; TRP for both uplink and downlink transmission.

[0210] In some implementations, the first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

[0211] Figure 8 is a schematic diagram of a network device according to another embodiment of this application. The network device 800 shown in Figure 8 includes a receiving unit 810.

[0212] The receiving unit 810 is used to receive second information sent by the terminal device. The second information is used to instruct the terminal device to manage the first TRP. The first TRP is used by the terminal device to perform multi-TRP transmission.

[0213] In some implementations, managing the first TRP includes one of the following: activating the first TRP; deactivating the first TRP; adding the first TRP; releasing the first TRP; measuring the first TRP; and receiving the measurement result of the first TRP.

[0214] In some implementations, the first TRP belongs to a set of TRPs, and managing one or more of the first TRPs includes managing one or more TRPs in the set of TRPs.

[0215] In some implementations, the first condition is associated with one or more of the following: the measurement result of the serving TRP; the measurement result of the first TRP; the location information of the terminal device; the first region associated with the serving TRP; the second region associated with the first TRP; the first time period associated with the first TRP; the TRP associated with the data to be transmitted; and the amount of data to be transmitted.

[0216] In some implementations, the first condition includes one or more of the following: the channel quality of the serving TRP is lower than or equal to a first threshold, the serving TRP including a primary TRP and / or a secondary TRP; the channel quality of the first TRP is higher than a second threshold; the channel quality of the first TRP is higher than the channel quality of the serving TRP, and the difference between the channel quality of the first TRP and the channel quality of the serving TRP is greater than a third threshold; the terminal device leaves a first area associated with the serving TRP; the terminal device enters a second area associated with the first TRP; the data to be transmitted by the terminal device is associated with the first TRP; the amount of data to be transmitted by the terminal device is greater than or equal to a threshold value; the channel quality of the serving TRP is greater than or equal to a fourth threshold.

[0217] In some implementations, the receiving unit is configured to: receive second information sent by the terminal device, the second information being used to instruct the management of the first TRP.

[0218] In some implementations, the parameters of the first TRP include one or more of the following: the identifier of the first TRP; the TRP type of the first TRP; the cell information that the first TRP cooperates with; the activation indication information of the first TRP; the deactivation indication information of the first TRP; the TCI status associated with the first TRP; the uplink synchronization information associated with the first TRP; the reference signal information associated with the first TRP; the indication information for instructing the first TRP to acquire TA; at least one configuration activation indication information associated with the first TRP; and the resource configuration indication information required for uplink synchronization with the first TRP.

[0219] In some implementations, at least one configuration associated with the first TRP includes one or more of the following: resource configuration associated with the first TRP; transmission configuration associated with the first TRP; HARQ configuration associated with the first TRP; and link monitoring configuration associated with the first TRP.

[0220] In some implementations, at least one configuration associated with the first TRP is carried in the first information.

[0221] In some implementations, at least one configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; and time domain information.

[0222] In some implementations, the TRP type of the first TRP includes one or more of the following: control plane CP TRP; user plane UP TRP; TRP for listening to common channels; TRP not for listening to common channels; TRP for uplink transmission only; TRP for downlink transmission only; TRP for both uplink and downlink transmission.

[0223] In some implementations, the first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

[0224] Figure 9 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 9 indicate that the unit or module is optional. This device 900 can be used to implement the methods described in the above method embodiments. The device 900 can be a chip, a terminal device, or a network device.

[0225] The apparatus 900 may include one or more processors 910. The processor 910 may support the apparatus 900 in implementing the methods described in the preceding method embodiments. The processor 910 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0226] The apparatus 900 may further include one or more memories 920. The memories 920 store a program that can be executed by the processor 910, causing the processor 910 to perform the methods described in the preceding method embodiments. The memories 920 may be independent of the processor 910 or integrated within the processor 910.

[0227] The device 900 may also include a transceiver 930. The processor 910 can communicate with other devices or chips via the transceiver 930. For example, the processor 910 can send and receive data with other devices or chips via the transceiver 930.

[0228] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0229] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0230] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0231] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0232] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0233] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0234] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0235] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0236] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0237] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0238] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0239] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0240] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0241] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0242] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0243] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device manages one or more first transmission points (TRPs) based on first information or a first condition. The first TRPs are used by the terminal device for multi-TRP transmission. The first information is either Layer 1 signaling or Layer 2 signaling sent by the network device.

2. The method as described in claim 1, characterized in that, The management of the first TRP includes the following: Activate the first TRP; Deactivate the first TRP; Add the first TRP; Release the first TRP; Measure the first TRP; Send the measurement results of the first TRP.

3. The method as described in claim 1 or 2, characterized in that, The first TRP belongs to a set of TRPs, and managing one or more first TRPs includes managing one or more TRPs in the set of TRPs.

4. The method according to any one of claims 1-3, characterized in that, The first condition is associated with one or more of the following: Measurement results of service TRP; The measurement results of the first TRP; The location information of the terminal device; The first region associated with the service TRP; The second region associated with the first TRP; The first time period associated with the first TRP; The TRP associated with the data to be transmitted; The amount of data to be transmitted.

5. The method according to any one of claims 1-4, characterized in that, The first condition includes one or more of the following: The channel quality of the serving TRP is lower than or equal to a first threshold, and the serving TRP includes a primary TRP and / or a secondary TRP; The channel quality of the first TRP is higher than the second threshold; The channel quality of the first TRP is higher than that of the serving TRP, and the difference between the channel quality of the first TRP and the channel quality of the serving TRP is greater than a third threshold. The terminal device leaves the first region associated with the service TRP; The terminal device enters the second area associated with the first TRP; The data to be transmitted by the terminal device is associated with the first TRP; The amount of data to be transmitted by the terminal device is greater than or equal to the threshold value; The channel quality of the service TRP is greater than or equal to the fourth threshold.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: The terminal device sends a second message to the network device, the second message being used to instruct the terminal device to manage the first TRP.

7. The method according to any one of claims 1-3, characterized in that, The Layer 2 signaling includes one or more of the following: Media Access Control (MAC) CE element used for LTM cell handover; MAC CE used for secondary cell SCell activation; MAC CE used for deactivating secondary cell SCells.

8. The method according to any one of claims 1-7, characterized in that, The method further includes: The terminal device obtains the parameters of the first TRP, and the parameters of the first TRP include one or more of the following: The identifier of the first TRP; The TRP type of the first TRP; Cell information of the first TRP collaboration; Activation indication information of the first TRP; The deactivation indication information of the first TRP; The transport configuration associated with the first TRP indicates the TCI status; The uplink synchronization information associated with the first TRP; The reference signal information associated with the first TRP; Used to instruct the first TRP to obtain the timing advance TA indication information; At least one configuration activation indication information associated with the first TRP; Resource configuration indication information required for uplink synchronization with the first TRP.

9. The method as described in claim 8, characterized in that, The configuration associated with the first TRP includes one or more of the following: The resource configuration associated with the first TRP; The transport configuration associated with the first TRP; The HARQ configuration associated with the first TRP; The link monitoring configuration associated with the first TRP.

10. The method as described in claim 8 or 9, characterized in that, At least one configuration associated with the first TRP is carried in the first information.

11. The method according to any one of claims 8-10, characterized in that, The configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; time domain information.

12. The method according to any one of claims 8-11, characterized in that, The TRP type of the first TRP includes one or more of the following: Control plane CP TRP; User-facing UP TRP; TRP used for monitoring public channels; TRPs not used for monitoring public channels; TRP used only for uplink transmission; TRP used only for downlink transmission; TRP is used for both uplink and downlink transmissions.

13. The method according to any one of claims 1-12, characterized in that, The method further includes: Before the terminal device manages the first TRP, the terminal device synchronizes with the first TRP.

14. The method according to any one of claims 1-13, characterized in that, The first information is used to indicate the activation of the first TRP, and the method further includes: If the number of TRPs supported by the terminal device reaches the upper limit, in response to receiving the first information, the terminal device performs a first operation, the first operation including one of the following: Ignore activation of the first TRP; Deactivate the currently active TRP and activate the first TRP.

15. The method according to any one of claims 1-14, characterized in that, The first TRP is identified by one or more of the following: the control resource set CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the reference signal set RS associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

16. A method for wireless communication, characterized in that, include: The network device sends first information to the terminal device. The first information is used to instruct the terminal device to manage the first TRP. The first TRP is one of multiple TRPs performed by the terminal device. The first information is Layer 1 signaling or Layer 2 signaling sent by the network device.

17. The method as described in claim 16, characterized in that, The management of the first TRP includes the following: Activate the first TRP; Deactivate the first TRP; Add the first TRP; Release the first TRP; Measure the first TRP; Receive the measurement results from the first TRP.

18. The method as described in claim 16 or 17, characterized in that, The first TRP belongs to a set of TRPs, and managing one or more of the first TRPs includes managing one or more TRPs in the set of TRPs.

19. The method according to any one of claims 16-18, characterized in that, The Layer 2 signaling includes one or more of the following: MAC CE for LTM cell handover; MAC CE used for secondary cell SCell activation; MAC CE used for deactivating secondary cell SCells.

20. The method according to any one of claims 16-19, characterized in that, The parameters of the first TRP include one or more of the following: The identifier of the first TRP; The TRP type of the first TRP; Cell information of the first TRP collaboration; Activation indication information of the first TRP; The deactivation indication information of the first TRP; The TCI state associated with the first TRP; The uplink synchronization information associated with the first TRP; The reference signal information associated with the first TRP; Instructions used to instruct the first TRP to obtain TA information; At least one configuration activation indication information associated with the first TRP; Resource configuration indication information required for uplink synchronization with the first TRP.

21. The method as described in claim 20, characterized in that, The configuration associated with the first TRP includes one or more of the following: The resource configuration associated with the first TRP; The transport configuration associated with the first TRP; The HARQ configuration associated with the first TRP; The link monitoring configuration associated with the first TRP.

22. The method as described in claim 20 or 21, characterized in that, At least one configuration associated with the first TRP is carried in the first information.

23. The method according to any one of claims 20-22, characterized in that, The configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; time domain information.

24. The method according to any one of claims 20-23, characterized in that, The TRP type of the first TRP includes one or more of the following: Control plane CP TRP; User-facing UP TRP; TRP used for monitoring public channels; TRPs not used for monitoring public channels; TRP used only for uplink transmission; TRP used only for downlink transmission; TRP is used for both uplink and downlink transmissions.

25. The method according to any one of claims 16-24, characterized in that, The first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

26. A method for wireless communication, characterized in that, include: The network device receives second information sent by the terminal device. The second information is used to instruct the terminal device to manage the first TRP, which is used by the terminal device to perform multi-TRP transmission.

27. The method as described in claim 26, characterized in that, The management of the first TRP includes the following: Activate the first TRP; Deactivate the first TRP; Add the first TRP; Release the first TRP; Measure the first TRP; Receive the measurement results from the first TRP.

28. The method as described in claim 26 or 27, characterized in that, The first TRP belongs to a set of TRPs, and managing one or more of the first TRPs includes managing one or more TRPs in the set of TRPs.

29. The method according to any one of claims 26-28, characterized in that, The first condition is associated with one or more of the following: Measurement results of service TRP; The measurement results of the first TRP; The location information of the terminal device; The first region associated with the service TRP; The second region associated with the first TRP; The first time period associated with the first TRP; The TRP associated with the data to be transmitted; The amount of data to be transmitted.

30. The method according to any one of claims 26-29, characterized in that, The first condition includes one or more of the following: The channel quality of the serving TRP is lower than or equal to a first threshold, and the serving TRP includes a primary TRP and / or a secondary TRP; The channel quality of the first TRP is higher than the second threshold; The channel quality of the first TRP is higher than that of the serving TRP, and the difference between the channel quality of the first TRP and the channel quality of the serving TRP is greater than a third threshold. The terminal device leaves the first region associated with the service TRP; The terminal device enters the second area associated with the first TRP; The data to be transmitted by the terminal device is associated with the first TRP; The amount of data to be transmitted by the terminal device is greater than or equal to the threshold value; The channel quality of the service TRP is greater than or equal to the fourth threshold.

31. The method according to any one of claims 26-30, characterized in that, The method further includes: The network device receives second information sent by the terminal device, the second information being used to instruct the management of the first TRP.

32. The method according to any one of claims 26-31, characterized in that, The parameters of the first TRP include one or more of the following: The identifier of the first TRP; The TRP type of the first TRP; Cell information of the first TRP collaboration; Activation indication information of the first TRP; The deactivation indication information of the first TRP; The TCI state associated with the first TRP; The uplink synchronization information associated with the first TRP; The reference signal information associated with the first TRP; Instructions used to instruct the first TRP to obtain TA information; At least one configuration activation indication information associated with the first TRP; Resource configuration indication information required for uplink synchronization with the first TRP.

33. The method as described in claim 32, characterized in that, The configuration associated with the first TRP includes one or more of the following: The resource configuration associated with the first TRP; The transport configuration associated with the first TRP; The HARQ configuration associated with the first TRP; The link monitoring configuration associated with the first TRP.

34. The method as described in claim 32 or 33, characterized in that, At least one configuration associated with the first TRP is carried in the first information.

35. The method according to any one of claims 32-34, characterized in that, The configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; time domain information.

36. The method according to any one of claims 32-35, characterized in that, The TRP type of the first TRP includes one or more of the following: Control plane CP TRP; User-facing UP TRP; TRP used for monitoring public channels; TRPs not used for monitoring public channels; TRP used only for uplink transmission; TRP used only for downlink transmission; TRP is used for both uplink and downlink transmissions.

37. The method according to any one of claims 26-36, characterized in that, The first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

38. A terminal device, characterized in that, include: A processing unit is configured to manage one or more first transmission points (TRPs) based on first information or a first condition. Used for the terminal device to perform multiple TRP transmissions. The first information is either Layer 1 signaling or Layer 2 signaling sent by the network device.

39. The terminal device as described in claim 38, characterized in that, The management of the first TRP includes the following: Activate the first TRP; Deactivate the first TRP; Add the first TRP; Release the first TRP; Measure the first TRP; Send the measurement results of the first TRP.

40. The terminal device as described in claim 38 or 39, characterized in that, The first TRP belongs to a set of TRPs, and managing one or more first TRPs includes managing one or more TRPs in the set of TRPs.

41. The terminal device as described in any one of claims 38-40, characterized in that, The first condition is associated with one or more of the following: Measurement results of service TRP; The measurement results of the first TRP; The location information of the terminal device; The first region associated with the service TRP; The second region associated with the first TRP; The first time period associated with the first TRP; The TRP associated with the data to be transmitted; The amount of data to be transmitted.

42. The terminal device as described in any one of claims 38-41, characterized in that, The first condition includes one or more of the following: The channel quality of the serving TRP is lower than or equal to a first threshold, and the serving TRP includes a primary TRP and / or a secondary TRP; The channel quality of the first TRP is higher than the second threshold; The channel quality of the first TRP is higher than that of the serving TRP, and the difference between the channel quality of the first TRP and the channel quality of the serving TRP is greater than a third threshold. The terminal device leaves the first region associated with the service TRP; The terminal device enters the second area associated with the first TRP; The data to be transmitted by the terminal device is associated with the first TRP; The amount of data to be transmitted by the terminal device is greater than or equal to the threshold value; The channel quality of the service TRP is greater than or equal to the fourth threshold.

43. The terminal device as described in any one of claims 38-42, characterized in that, The terminal device also includes: The sending unit is used to send second information to the network device, the second information being used to instruct the terminal device to manage the first TRP.

44. The terminal device as described in any one of claims 38-40, characterized in that, The Layer 2 signaling includes one or more of the following: MAC CE for LTM cell handover; MAC CE used for secondary cell SCell activation; MAC CE used for deactivating secondary cell SCells.

45. The terminal device as described in any one of claims 38-44, characterized in that, The terminal device also includes: The terminal device obtains the parameters of the first TRP, and the parameters of the first TRP include one or more of the following: The identifier of the first TRP; The TRP type of the first TRP; Cell information of the first TRP collaboration; Activation indication information of the first TRP; The deactivation indication information of the first TRP; The TCI state associated with the first TRP; The uplink synchronization information associated with the first TRP; The reference signal information associated with the first TRP; Instructions used to instruct the first TRP to obtain TA information; At least one configuration activation indication information associated with the first TRP; Resource configuration indication information required for uplink synchronization with the first TRP.

46. ​​The terminal device as described in claim 45, characterized in that, The configuration associated with the first TRP includes one or more of the following: The resource configuration associated with the first TRP; The transport configuration associated with the first TRP; The HARQ configuration associated with the first TRP; The link monitoring configuration associated with the first TRP.

47. The terminal device as described in claim 45 or 46, characterized in that, At least one configuration associated with the first TRP is carried in the first information.

48. The terminal device as described in any one of claims 45-47, characterized in that, The configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; time domain information.

49. The terminal device as described in any one of claims 45-48, characterized in that, The TRP type of the first TRP includes one or more of the following: Control plane CP TRP; User-facing UP TRP; TRP used for monitoring public channels; TRPs not used for monitoring public channels; TRP used only for uplink transmission; TRP used only for downlink transmission; TRP is used for both uplink and downlink transmissions.

50. The terminal device as described in any one of claims 38-49, characterized in that, The processing unit is used for: Before the terminal device manages the first TRP, it synchronizes with the first TRP.

51. The terminal device as described in any one of claims 38-50, characterized in that, The first information is used to indicate the activation of the first TRP, and the processing unit is used to: If the number of TRPs supported by the terminal device reaches the upper limit, in response to receiving the first information, a first operation is performed, the first operation including one of the following: Ignore activation of the first TRP; Deactivate the currently active TRP and activate the first TRP.

52. The terminal device as described in any one of claims 38-51, characterized in that, The first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

53. A network device, characterized in that, include: The sending unit is used to send first information to the terminal device. The first information is used to manage one or more first TRPs. The first TRPs are used by the terminal device to perform multi-TRP transmission. The first information is Layer 1 signaling or Layer 2 signaling sent by the network device.

54. The network device as described in claim 53, characterized in that, The management of the first TRP includes the following: Activate the first TRP; Deactivate the first TRP; Add the first TRP; Release the first TRP; Measure the first TRP; Receive the measurement results from the first TRP.

55. The network device as described in claim 53 or 54, characterized in that, The first TRP belongs to a set of TRPs, and managing one or more first TRPs includes managing one or more TRPs in the set of TRPs.

56. The network device as described in any one of claims 53-55, characterized in that, The Layer 2 signaling includes one or more of the following: MAC CE for LTM cell handover; MAC CE used for secondary cell SCell activation; MAC CE used for deactivating secondary cell SCells.

57. The network device as described in any one of claims 53-56, characterized in that, The parameters of the first TRP include one or more of the following: The identifier of the first TRP; The TRP type of the first TRP; Cell information of the first TRP collaboration; Activation indication information of the first TRP; The deactivation indication information of the first TRP; The TCI state associated with the first TRP; The uplink synchronization information associated with the first TRP; The reference signal information associated with the first TRP; Instructions used to instruct the first TRP to obtain TA information; At least one configuration activation indication information associated with the first TRP; Resource configuration indication information required for uplink synchronization with the first TRP.

58. The network device as described in claim 57, characterized in that, The configuration associated with the first TRP includes one or more of the following: The resource configuration associated with the first TRP; The transport configuration associated with the first TRP; The HARQ configuration associated with the first TRP; The link monitoring configuration associated with the first TRP.

59. The network device as described in claim 57 or 58, characterized in that, At least one configuration associated with the first TRP is carried in the first information.

60. The network device as described in any one of claims 57-59, characterized in that, The configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; time domain information.

61. The network device as described in any one of claims 57-60, characterized in that, The TRP type of the first TRP includes one or more of the following: Control plane CP TRP; User-facing UP TRP; TRP used for monitoring public channels; TRPs not used for monitoring public channels; TRP used only for uplink transmission; TRP used only for downlink transmission; TRP is used for both uplink and downlink transmissions.

62. The network device as described in any one of claims 53-61, characterized in that, The first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

63. A network device, characterized in that, include: The receiving unit is used to receive second information sent by the terminal device. The second information is used to instruct the terminal device to manage the first TRP, and the first TRP is used by the terminal device to perform multi-TRP transmission.

64. The network device as described in claim 63, characterized in that, The management of the first TRP includes the following: Activate the first TRP; Deactivate the first TRP; Add the first TRP; Release the first TRP; Measure the first TRP; Receive the measurement results from the first TRP.

65. The network device as described in claim 63 or 64, characterized in that, The first TRP belongs to a set of TRPs, and managing one or more of the first TRPs includes managing one or more TRPs in the set of TRPs.

66. The network device as described in any one of claims 63-65, characterized in that, The first condition is associated with one or more of the following: Measurement results of service TRP; The measurement results of the first TRP; The location information of the terminal device; The first region associated with the service TRP; The second region associated with the first TRP; The first time period associated with the first TRP; The TRP associated with the data to be transmitted; The amount of data to be transmitted.

67. The network device as described in any one of claims 63-66, characterized in that, The first condition includes one or more of the following: The channel quality of the serving TRP is lower than or equal to a first threshold, and the serving TRP includes a primary TRP and / or a secondary TRP; The channel quality of the first TRP is higher than the second threshold; The channel quality of the first TRP is higher than that of the serving TRP, and the difference between the channel quality of the first TRP and the channel quality of the serving TRP is greater than a third threshold. The terminal device leaves the first region associated with the service TRP; The terminal device enters the second area associated with the first TRP; The data to be transmitted by the terminal device is associated with the first TRP; The amount of data to be transmitted by the terminal device is greater than or equal to the threshold value; The channel quality of the service TRP is greater than or equal to the fourth threshold.

68. The network device as described in any one of claims 63-67, characterized in that, The receiving unit is used for: The terminal device receives a second message, which instructs the management of the first TRP.

69. The network device as described in any one of claims 63-68, characterized in that, The parameters of the first TRP include one or more of the following: The identifier of the first TRP; The TRP type of the first TRP; Cell information of the first TRP collaboration; Activation indication information of the first TRP; The deactivation indication information of the first TRP; The TCI state associated with the first TRP; The uplink synchronization information associated with the first TRP; The reference signal information associated with the first TRP; Instructions used to instruct the first TRP to obtain TA information; At least one configuration activation indication information associated with the first TRP; Resource configuration indication information required for uplink synchronization with the first TRP.

70. The network device as described in claim 69, characterized in that, The configuration associated with the first TRP includes one or more of the following: The resource configuration associated with the first TRP; The transport configuration associated with the first TRP; The HARQ configuration associated with the first TRP; The link monitoring configuration associated with the first TRP.

71. The network device as described in claim 69 or 70, characterized in that, At least one configuration associated with the first TRP is carried in the first information.

72. The network device as described in any one of claims 69-71, characterized in that, The configuration associated with the first TRP is associated with one or more of the following: spatial domain information; frequency domain information; time domain information.

73. The network device as described in any one of claims 69-72, characterized in that, The TRP type of the first TRP includes one or more of the following: Control plane CP TRP; User-facing UP TRP; TRP used for monitoring public channels; TRPs not used for monitoring public channels; TRP used only for uplink transmission; TRP used only for downlink transmission; TRP is used for both uplink and downlink transmissions.

74. The network device as described in any one of claims 63-73, characterized in that, The first TRP is identified by one or more of the following: the CORESET associated with the first TRP, the CORESET pool associated with the first TRP, the carrier associated with the first TRP, the RS set associated with the first TRP, the cell associated with the first TRP, and the configuration group associated with the first TRP.

75. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-15.

76. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 16-37.

77. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-37.

78. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-37.

79. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-37.

80. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-37.

81. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-37.

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